If the sizes are identical and the SEER is the same, their energy use should be nearly identical. The differences might come in with the air handler and the choice of fan speeds and the timing of how long it runs the fan, which is a function of the thermostat and air handler control circuits.

If the sizes are identical and the SEER is the same, their energy use should be nearly identical. The differences might come in with the air handler and the choice of fan speeds and the timing of how long it runs the fan, which is a function of the thermostat and air handler control circuits.

Compare the warranties and features.

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Yes that would be one of the BIGGEST things to check WARRANTIES and FEATURES of the three, you maybe surprizzed at them.